docs: def surface_projection_from_fault_data(cls, fault_trace,
                                             upper_seismogenic_depth,
                                             lower_seismogenic_depth, dip):
          """
          Get a surface projection of the simple fault surface.
  
          Parameters are the same as for :meth:`from_fault_data`, excluding
          mesh spacing.
  
          :returns:
              Instance of :class:`~openquake.hazardlib.geo.polygon.Polygon`
              describing the surface projection of the simple fault with
              specified parameters.
          """
          lons, lats = cls.get_surface_vertexes(fault_trace,
                                                upper_seismogenic_depth,
                                                lower_seismogenic_depth, dip)
          return Mesh(lons, lats, depths=None).get_convex_hull()